JSPM

extract-opts

3.0.0
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Extract the options and callback from a function's arguments easily

Package Exports

  • extract-opts

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (extract-opts) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Usage

var extractOpts = require('extract-opts')

// fs.readFile(filename, [options], callback)
var readFile = function(filename, opts, callback){
    // Extract options and callback
    var args = extractOpts(opts, callback)
    opts = args[0]
    callback = args[1]

    // Forward for simplicities sake
    require('fs').readFile(filename, opts, callback)
};

// Test it
var next = console.log.bind(console)
readFile('package.json', next)          // works with no options
readFile('package.json', null, next)    // works with null options
readFile('package.json', {next:next})   // works with just options